Relieving-gear for track-scales.



-- N0. 777,011 PATENTED DEC. 6, 1904. R. N. FAIRBANKS.

RELIEVING GEAR FOR TRACK SCALES.

APPLICATION FILED DEO.18, 19oz. RENEWED SEPT. 28. 1904.

no MODEL. ZSHEBTS-SHEET 1.

WITNESSES IN NTOH I R ki-"QM M I B M, W

PATEN'I'ED DEC. 6,1904.

R. N. FAIRBANKS.

RELIEVING GEAR FOR TRACK SCALES.

APPLICATION FILED DEO.18, 1902. mmnwnn SEPT. 26. 1904.

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30 MODEL.

A TTOHNEYS WITNESSES No, 777,011. Patented December 6, 1904.

UNITED STATES PATENT OEEIcE.

ROBERT NOYES FAIRBANKS, OF LONDON, ENGLAND, ASSIGNOR TO THE E. & T. FAIRBANKS & COMPANY, OF ST. JOHNSBURY, VERMONT, A OORPORA"ION OF VERMONT.

RELIEVING-GEAR FOR TRACK-SCALES.

SPECIFICATION forming part of Letters Patent No. 777,011, dated December 6, 1904.

Application filed December 18, 1902. Renewed September 28, 1904.. Serial No. 226,284. (N mOtlBL) 107mm it m y Concern" be supported by this framework, thus bring- Be it known that I, ROBERT NOYES FAIR- ing the strain upon the platform to allow the BANKS, a citizen of the United States, residing weighing to be accomplished, but taking the at London, England, have invented certain weight off the tracks.

5 new and useful Improvements in Relieving- Theinventionthereforeconsistsofarailroad Gear for Track-Scales, of which the following track or other platform scale having movable is a description, reference being had to the ways adapted to be brought into position to accompanying drawings and to the letters of support the vehicle to be weighed and take reference marked thereon. the weight thereof off the ordinary support 10 My invention relates to improvements in therefor.

railroad track-scales, and especially to what The invention also consists in the matters are known in the trade as relieving-gear hereinafter described, and referred to in the devices. appended claims.

The general type of scale to which the in- My invention is illustrated in the accompar5 vention is herein shown as applied is the well- 'nying drawings, in which known Fairbanks type, the only important Figure l is a top plan view of a railroad change being that the main levers instead of track-scale, illustrating my invention. Fig. being suspended from stands on the bench 2 is a sectional side elevation. Fig. 8 is a secwalls are suspended from yokes bolted or rivtional view on the line 3 3 of Fig. 1. Fig. 4E

20 eted to the channel-coping. is a sectional view on the line A 4 of Fig. 1.

In some relieving-gear devices arrange- Fig. 5 isa detail view of the shifting mechanments are provided so that when it is desired ism. Fig. 6 is a detail view illustrating the 7 to weigh a wagon or other vehicle passing over covering-plate. the scale the platform is arranged to be lifted In the drawings it will not be necessary to 2 5 off its pivots, so as to avoid jar to such pivots. refer to the usual parts of the scale, except Ordinarily in the use of track-scales with to state that A represents the platform; B, relieving attachments two sets of rails are prothe beam-box; O, the main levers; D, the vided, one set resting upon the scale-platform, multiplying-levers, and E the set of rails restwhile of the other set one rests upon the coping upon'the outer walls F of the foundation,

3 ing outside the scale-platform and the other there being no rails upon the scale-platform is supported by stands or framework coming whatever. up through the platform, and by means of On top of the platformalong both sides adswitches at each end of the scales the cars jacent to the side walls of the foundation are can be transferred over the live rails on the flat bars of iron Gr, having transverse elon- 35 scale-platform or over the dead rails, as is degated slots at, through which pass studs Z), sesired. cured to the top flanges of the platform-gird- The object of the present invention is to proers I. One of these bars is connected by a 5 vide a construction in which the platform may series of pivoted links 0 with a longitudinal be narrowed somewhat and the scale provided bar K, which bar K is pivotally attached to 4 with only one set of rails, these rails resting the central levers f, thesecentral levers f beupon the outer walls of the foundation, there ing attached at their opposite ends to links g, being no rails whatever upon the scale-platpivotally attached to the other flat bar. One 9 form, there being, however, provided upon of said central levers has a projecting arm to the scale platform a horizontallyshiftable which is attached a lever pivoted to the side 45 framework orsupport which when it is deof the beam-box, the central levers, together I sired to use the platform for purposes of weighwith the links, forming a series of lever-anding can be brought into position so that the toggle connections, so that the fiat iron bars flanges of the car-wheels will ride upon and may be moved out to the edge of the platform or drawn in toward the center of the platform by manipulation of the hand-lever shown in in Fig. 5 and marked M.

In operation when the bars are drawn in toward the center of the platform the wheels of the cars will pass by the scale without coming in contact with the platform. By throwing these bars outward to their utmost limit the outer edges of the bars come underneath the flanges on the wheels of the cars, and instead of the faces of the wheels resting on the rails the ear is supported by the flange of the wheels resting on these bars, thus transferring the weight of the car from the rails to the platform. The studs which retain the side bars in place are somewhat higher than the thickness of the bars, and on top of these studs is placed a covering-plate O, which covers the levers controlling the bars to prevent them getting clogged by dirt, ice, or any other foreign substance.

Various minor modifications and changes in the construction of the parts of the apparatus may be made without departing from the spirit of the invention.

Having thus described my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

1. In an apparatus of the character described, the combination with a scale-platform and ways for supporting the vehicle to be weighed, sliding supports for the vehicle to be weighed arranged upon said platform, a longitudinal bar with pivoted links connecting said bar to one of the sliding supports, central levers pivotally connected to a stationary part of the scale-frame and having pivotal connection with said bar and links attached to the opposite ends of said central levers and pivotally secured to the other support; substantially as described.

2. In an apparatus of the character described, the combination with a central platform and ways for supporting the vehicle to be weighed, sliding supports for the vehicle to be weighed arranged upon said platform, a longitudinal bar with pivoted links connecting said bar to one of the sliding supports, central levers pivotal] y connected to a stationary part of the scale-frame and having pivotal connection with said bar and links attached to the opposite ends of said central levers and pivotally secured to the other support, one of said central levers having a projecting arm and a handlever for manipulating the same; substantially as described.

8. In an apparatus of the character described, the combination with the scale-frame, a platform and ways for supporting the vehicle to be weighed, slidingsupports for the vehicle to be weighed arranged upon said platform, a longitudinal bar with pivoted links connecting said bar to one of the sliding supports, central levers pivotally connected to a stationary part of the scale-frame and having pivotal connection with said bar and links connected to the opposite ends of said central levers and pivotally secured to the other support, and a covering-plate for the levers and link connections; substantially as described.

4:- In a device of the character described, a scale platform, platform girders, ways arranged alongside said platform, fiat bars upon said platform having a stud-and-slot connection with the platform-girders, a series of toggle connections between said bars and levers, for straining and flexing said toggles; substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

ROBERT N OYES FAIRBANKS.

Witnesses:

H. I). J AMESON, A. NUTTING. 

